Ligand binding may involve a wide range of structural changes in the
receptor protein, from group movement of entire domains to small
side-chain
rearrangements in the binding pocket residues. In this talk I review
protein structures, energy models, classical rigid docking problem,
and how we can model and introduce protein binding pockets flexibility.
All these models strive to balance an improvement in the accuracy of the
binding predictions with an increase in computational cost.